Non-nutritive sweeteners are substances used to add sweetness to foods and beverages without providing significant calories. Common examples include aspartame, sucralose, and stevia. These sweeteners are often much sweeter than regular sugar, so only small amounts are needed to achieve the desired sweetness. These sweeteners are popular among people looking to reduce calorie intake or manage conditions like diabetes. While they can help satisfy a sweet craving without the added calories, some individuals may experience sensitivity or prefer natural alternatives. It's important to read labels and understand the ingredients in products containing non-nutritive sweeteners.